Baths – closets – sinks – and spittoons – Pool type – Construction details
Reexamination Certificate
2002-07-11
2003-07-08
Fetsuga, Robert M. (Department: 3751)
Baths, closets, sinks, and spittoons
Pool type
Construction details
Reexamination Certificate
active
06588028
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an inflatable pool, more particularly to an inflatable pool with inflatable posts along its outer periphery.
2. Description of the Related Art
Referring to
FIGS. 1
to
3
, a conventional inflatable. pool
100
is adapted to be filled with water, and is shown to include first, second, and third ring members
11
,
12
,
13
, and a bottom wall
15
. The ring members
11
,
12
,
13
are stacked and interconnected by a heat-sealing process. The bottom wall
15
is heat-sealed to an inner periphery of the third ring member
13
, and cooperates with the ring members
11
,
12
,
13
to define an open receiving space
16
.
When the receiving space
16
is empty, the ring members
11
,
12
,
13
can form a vertical row, as shown in FIG.
3
. When water starts to fill the receiving space
16
, the second and third ring members
12
,
13
are pulled outwardly by water pressure, thereby deforming the second and third ring members
12
,
13
, as shown in
FIGS. 1 and 2
. Since the inflatable pool
100
is deformed, a push-pull force occurs among the ring members
11
,
12
,
13
, thereby weakening their connection, and thereby shortening the service life of the inflatable pool
100
.
FIG. 4
illustrates another conventional inflatable pool
200
disclosed in U.S. Design Patent No. D408,546. The inflatable pool
200
includes a ring member
21
, a bottom wall
23
, and a plurality of interconnected side walls
25
. The bottom wall
23
and the side walls
25
are made of a single-layer plastic material. Each of the side walls
25
has an upper end connected continuously to a lower periphery of the ring member
21
by thermal welding, and a lower end connected continuously to an inner periphery of the bottom wall
23
by thermal welding, thereby defining an open receiving space
27
. When the receiving space
27
is not fully filled with water, the side walls
25
cannot completely lift the ring member
21
upwardly due to its flexible material such that the pool
200
cannot be used at this time. When water is fully filled into the receiving space
27
, water pressure exerted on the side walls
25
will enable the latter to raise the ring member
21
completely, thereby permitting use of the inflatable pool
200
. However, since water level of the inflatable pool
200
is relatively high, it can pose danger to small children who play in the pool
200
.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide an inflatable pool that is free of the aforesaid drawbacks of the prior art.
According to this invention, an inflatable pool comprises an inflatable first annular member, an inflatable second annular member, a plurality of spaced-apart inflatable posts, a bottom wall, and an annular upright side wall unit. The second annular member is opposite to the first annular member. Each of the inflatable posts has two ends that are connected respectively and fixedly to the first and second annular members. The bottom wall has a periphery that is connected sealingly to an inner periphery of the second annular member. The side wall unit includes a flexible sheet member, and has upper and lower ends that are connected respectively and sealingly to the first and second annular members along the full length of the first and second annular members. The side wall unit abuts against the posts.
REFERENCES:
patent: 2854049 (1958-09-01), Wyllie
patent: 3631544 (1972-01-01), Tytel
patent: 4893362 (1990-01-01), Murphy
patent: 5416932 (1995-05-01), Ventrice
Fetsuga Robert M.
Jones Allston L.
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